Column for the drying of liquids, pasty materials, or solid matter.



G. P. GUIGNARD & H. L. A. M. WATRIGANT. COLUMN FOR THE DRYING 0FLIQUIDS, PASTY MATERIALS, OR SOLID MATTER.

I APPLICATION FILED MAY 27, 1911. 1,036,486. Patented Aug. 20,1912.

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"IVATRIGJHTT. PASTY MATERIALS, 0R SOLID MATTBBH- APPLICATION FILED MAY27. 1911.

Patented Aug. 20, 1912.

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NTTED STATES PATENT OFFICE.

GASTON PHILIPPE GUIGNARD, OF MELUN, AND HENRI LOUIS ADOLPHE MARIEWATRIGANT, OF LILLE, FRANCE.

COLUMN FOR THE DRYING OF LIQUIDS, PASTY MATERIALS, OR SOLID MATTER.

Application filed May 27, 1911.

To all whom it may c0n0em Be it known that we, GASTON PHILIPPE GUioNAuD,a citizen of the Republic of France, and a resident of Avenue desMarronniers, Melun, Seine and Marne, France, and HENRI LoUIs AnoLrHr.MARIE VVATRI- cim'r, a citizen of the Republic of France, and a residentof 48 Facade de lEsplanade, Lille, Nord, France, have invented a new anduseful Column for the Drying of Liquids, Pasty Materials, or SolidMatter, of which the following is a specification.

This invention relates to an apparatus or column for the drying ofliquids, pasty materials, or solid matter.

The apparatus which forms the subject of the present invention consistsof a column or pile of superposed plates; the divisions are separatedfrom one another by two plates, between which there circulates theheating medium, such as steam, liquid heated to a fixed temperature, hotwaste gases from any source, or other suitable source of heat.

The sections communicate with one another by an opening in the shape ofa circular sector; these openings are arranged in a helix in such amanner that the product falling from the upper plate is obliged to makea complete turn upon the plate next below before passing to thefollowing plate. This condition is obtained by means of scraper bladesarranged along radii of the circle of the column and movable around itsaxis, being operated by a vertical shaft which passes from top to bottomof the column. The blades have also another purpose in addition to thatmentioned; they scrape the heating plates and prevent their surface frombecoming covered with a heat resisting coating formed of the materialunder treatment.

The top cover carries a pipe for producing a vacuum in the apparatus,and an entrance for material. The feeding device depends upon the natureof the substance to be dried.

The lower cover or bottom carries an extraction flask to allow theremoval of material. without breaking the vacuum.

An armhole is provided in each section to allow of changing or adjustingthe blades without requiring to take down the column.

The invention is shown by way of ex Specification of Letters Patent.

Patented A11 20, 1912.

Serial No. 629,837.

ample upon the accompanying drawings, in which Figure 1 is alongitudinal section of the column. F ig. 2 is a plan of one of thetypes of disk employed. Fig. 3 is a plan of the other type of diskemployed. Fig. 4: is a section upon line 4l--4c ofFig. 2. Fig. 5 is asection on line 5-5 of Fig. 3.

In these drawings, a is the top cover of the apparatus, 5 the entrancefor material,

'0 the vacuum connection, (Z the scraper blades which are fitted toblade-carrying spiders c secured upon the central shaft f, g g arescrews which allow of adjusting the pressure of the blades upon thebottom of the plates, while it is the upper ,plate carrying the bladesand upon which the material to be dried is received in the sector formedby two adjacent blades.

2' is the opening through which the material after being passed over thewhole surface of the plate falls upon the plate immediately beneath. jis another plate which forms as it were the bottom of a box, of which hwould be the lid. This plate is divided. by partitions 7a which forcethe heating medium entering therein to impinge upon all parts of theheating surfaces. This medium enters through an opening Z and leavesthrough another opening m. A wall 42 extends around the opening 0 whichis similar to and coincident with the opening 2' in the plate It. Thiswall also prevents direct passage of the medium from the entrance to theexit.

29 is a hopper through which the dried material after having passed overall the plates, is delivered. to the vacuum flask 1- is a cock whichallows the column to be cut off from the flask g.

The apparatus works in the following manner: The material to be dried isintroduced through the pipe or entrance 5 and received in thesector-shaped space formed by two adjacent blades. The blades cloperated by the shaft f advance the material and pass it over the wholesurface of the plate It until it reaches the opening and falls upon thesecond. plate it placed immediately below. Upon this plate the materialis also received in a sector-shaped space similar to that of thepreceding plate; the blades impart to the material a similar course overthe new plate until it reaches the opening where it falls upon thefollowing plate on which it is received in the same way as on thepreceding ones. The operation is re peated as many times as there areplates in the column. The openings of the plates being arranged in ahelix upon the consecutive plates, the material to be dried traverses inthe column the longest possible path before being received in the vacuumflask. On the other hand the arrangement of the partitions upon thelower'plates compels the heating medium to pass likewise over all partsof the plates and so to dis tribute the heat. This column may serve fornumerous purposes, more especially: (1) as concentrator for liquidscontaining crystallizable products; as complete drying column forliquids, such as vinasse,

pasty substances, or moist residues of any substances; as vacuum-stillfor any materials, such as glycerin; as vacuumconcentrator for themanufacture of gelatin, condensed milk, etc.; (5) as vinasseboiler forheating distillery wines by means of steam derived from the vinasseitself and thereby to produce a concentration of this vinasse whichissubsequently completely dried.

It is evident that the present invention is not limited to the detailsof construction scribed, a series of superposed heated dry 40 ingplates, and rotary scraping arms in contact with the upper surfaces ofsaid plates serving not only to pass the material under treatment oversaid plates but also to remove adherent material from the surface ofsaid plates, said scraping arms comprising channeled blade carriers,blades fitted within said channels and pressure screws passing throughsaid carriers and bearing upon the upper edges of the blades to forcethem down against the surfaces of the drying plates, substantially asdescribed.

In testimony whereof we have signed our names to this specification, inthe presence of two subscribing witnesses.

GASTON PHILIPPE GUIGNARD. HENRI LOUIS ADOLPHE MARIE WATRIGANT.

VVit-nesses.

DEAN B. MAsoN, LEON PEILLET.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C.

